Architecture comparisons

Compare who owns what

A framework, a hosted agent platform and an all-in calling product leave different work to your team. These pages compare who owns what. Where a vendor lists a per-minute price, we quote it with its source and the date we read it.

Documentation links dated 12 September 2026; list prices read 6 November 2026. No live vendor request was made while building these pages. Documentation links are official starting points, and any list price quoted was read from the vendor's own pricing page on 6 November 2026. Prices and terms change: recheck the vendor's page before you decide.

hosted orchestration

Vapi

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

$0.05 a minute · Vapi list price, 6 November 2026

Vapi documentation ↗
hosted voice agents

Retell

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

$0.055 a minute · Retell AI list price, 6 November 2026

Retell documentation ↗
hosted voice agents

Bland

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

$0.12 to $0.14 a minute · Bland list price, 6 November 2026

Bland documentation ↗
voice-agent platform

Bolna

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

Bolna product site ↗
self-hostable platform

Dograh

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

Dograh repository ↗
realtime framework

Pipecat

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

$0.01 a minute · Pipecat Cloud list price, 6 November 2026

Pipecat documentation ↗
hosted orchestration

Millis

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

Millis product site ↗
voice-agent platform

Vogent

Compare who owns the AI keys, the phone line and the runtime, without assuming current vendor features.

Vogent product site ↗

Questions that survive a price-page change

Whose keys?

Does your team own provider credentials and choose the exact models?

Whose line?

Who owns numbers, caller identity, routing, compliance, and carrier charges?

Whose runtime?

Who operates realtime media, interruption, retries, admission, and metering?